Base station apparatus and resource allocation method

  • US 10,015,794 B2
  • Filed: 05/05/2017
  • Issued: 07/03/2018
  • Est. Priority Date: 11/14/2008
  • Status: Active Grant
First Claim
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1. A communication apparatus, comprising:

  • circuitry, which, in operation, implements;

    a discrete Fourier transformer which, in operation, performs Fourier transformations (DFTs) on a plurality of symbol sequences that derive from two code words, each of the plurality of symbol sequences corresponding to one of a plurality of layers, wherein a number of the plurality of layers is at least two;

    a precoder which, in operation, generates four precoded symbol sequences based on the plurality of DFT transformed symbol sequences and a precoding matrix; and

    a mapper which, in operation, maps each of the four precoded symbol sequences on a same set of discontinuous frequency resources, each frequency resource being located on a separate position from other frequency resources on a frequency axis, wherein the four precoded symbol sequences share a number of clusters, cluster sizes, and a frequency position of each of the clusters in common, a cluster size being a frequency bandwidth of the discontinuous frequency resource; and

    a plurality of antenna ports which, in operation, transmit the mapped four precoded symbol sequences, wherein the four precoded symbol sequences include first and second precoded symbol sequences corresponding to a first code word and include third and fourth precoded symbol sequences corresponding to a second code word that is different from the first code word.

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